* {
    box-sizing: border-box;
}

body {
    height: 100vh;
    margin: 0;
    background-color: pink;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.empty {
    width: 150px;
    height: 150px;
    background-color: #Fff;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.16), 0 5px 3px rgba(0, 0, 0, 0.32);
    margin: 0 10px;
    border: 3px solid rgba(0, 0, 0, 0.6);
}

.fill {
    background-image: url('https://source.unsplash.com/random/150x150');
    height: 147px;
    width: 147px;
    cursor: pointer;
}
.drag-img{
    border: none;
}
.hold {
    border: solid 3px #ccc;
  }
  
.hover{
    border: 3px dashed #fff;
    background-color: #333;
}

@media (max-width: 800px) {
    body{
        flex-direction: column;
    }
}